Q1. A wheel 45.0 cm in diameter accelerates uniformly from 206rpm to 340 rpm in 7.0 s. How far will a point on edge of the wheel have travelled in this time?
Q2. The inner conductor of a coaxial cable has a radius of 0.800 mm, and the outer conductor's inside radius is 4.00 mm. The space between the conductors is filled with polyethylene, that has a dielectric constant of 2.30 and a dielectric strength of 18 106 V/m. What is the maximum potential difference that this cable can withstand?